com.stehno.sjdbcx.reflection.operation.OperationContext.java Source code

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Here is the source code for com.stehno.sjdbcx.reflection.operation.OperationContext.java

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/*
 * Copyright (c) 2013 Christopher J. Stehno
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.stehno.sjdbcx.reflection.operation;

import com.stehno.sjdbcx.reflection.extractor.CollaboratorExtractor;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate;

import javax.sql.DataSource;
import java.lang.reflect.Method;
import java.util.IdentityHashMap;
import java.util.Map;

/**
 *  Helper context used when building operation instances to provide access to shared resouces
 *  and simplify operation construction.
 *
 *  This class is for internal use only.
 */
public class OperationContext {

    private DataSource dataSource;

    private final Map<Class, CollaboratorExtractor> extractors = new IdentityHashMap<>();

    public void setDataSource(final DataSource dataSource) {
        this.dataSource = dataSource;
    }

    public void registerExtractor(Class forType, CollaboratorExtractor extractor) {
        extractors.put(forType, extractor);
    }

    public NamedParameterJdbcTemplate getNamedParameterJdbcTemplate() {
        return new NamedParameterJdbcTemplate(dataSource);
    }

    public JdbcTemplate getJdbcTemplate() {
        return new JdbcTemplate(dataSource);
    }

    @SuppressWarnings("unchecked")
    public <E> E extract(final Class<E> type, final Method method) {
        return (E) extractors.get(type).extract(method);
    }
}